OJ trial. Combined with Jurassic Park, it's how I learned what DNA was, how it is important to building living beings, and how it can be used to identify specific human beings long before I got to that point in any science class.
Bonus: OJ in the Bronco cut into the classic Rockets/Knicks Finals.
That might be the only time in history that a bunch of 9-15 year old kids were out here watching Court TV on the regular.
I want to give a shout out to Jeff Gilooly bashing Nancy Kerrigan in the knee with a crowbar so that she wouldn't be competition for Tonya Harding. That was a seminal moment in "white folks acting crazy" for me.